Imagine this &#; you have finally finished parting and grooving an expensive part. Your excitement quickly turns into disappointment when you find your finished part has poor surface finish and pips/burrs. Worst of all, you realize that your cutting tool is damaged almost beyond repair. You&#;ll have to scrap your expensive part and replace your cutting tool.
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Achieving success in parting and grooving without sacrificing your tool life can be tricky. If you are not careful, scenarios like the one described can be a common occurrence at your shop.
So, how do we prevent these scenarios? The secret to successful parting and grooving is closer than you think. It lies within your cutting tool.
The Basics of Parting and Grooving
Each operation will vary depending on your application, workpiece, and machining needs. However, in most parting and grooving operations, only a small surface is available. This is why coolant delivery is essential to protect your tool, your workpiece, and draw heat away from your cutting edge.
Another common occurrence during parting and grooving operations is the formation of pips and burrs. This happens when the cutting tool approaches the centre and breaks off the material, leaving a small pip in the middle of the workpiece.
3 Common Challenges in Parting and Grooving
There are many unique challenges that come with parting and grooving. These challenges can vary depending on what material you are machining as well. Below, we cover some common problems that come with parting and grooving.
1. Chip Jamming
Poor chip evacuation and formation in parting and grooving can lead to chip jamming. This is a common problem because there is little space for chips to form and evacuate in parting and grooving.
Chip jamming causes a multitude of problems during your machining process. It can lead to poor surface finish and tool breakage. Your costs go up tremendously on scrapped parts and damaged tools.
2. Damage to Your Cutting Edge
Conditions can become very unstable when parting off. Cutting speed drops to zero at the end of the part-off, increasing the pressure on your tool. This could damage your cutting edge and even break your tool.
3. Lack of Coolant Flow
Inadequate use of coolant in your parting and grooving operations could lead to reduced tool life and surface finish. Since there&#;s limited surface space available in parting and grooving, coolant is essential to drawing heat away from your cutting edge. However, lack of coolant flow is a common problem in parting and grooving because of chip jamming &#; the buildup of chips could block the coolant from getting to the cutting edge.
Exploring the Secret to Success &#; Tool Choice
The right tool could help you overcome common challenges in parting and grooving. It could also help you overcome unique challenges that you may face when
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The Right Tool Could Help You&#;
Improve Your Chip Control
In parting and grooving, chips need to be formed in a way where they can easily be evacuated from the groove without damaging the tool or workpiece, nor interrupting the machining process. The right tool could help you improve your chip control and mitigate risks such as chip jamming.
Provide Up-to-date Coolant Delivery
Coolant protects your cutting edge and workpiece, and helps with chip formation in parting and grooving. However, it&#;s the way the coolant is delivered to your cutting edge that leads to successful parting and grooving. For example, look at this CoroCut 2 link from Sandvik Coromant. Consider how CoroCut 2 parting blades are equipped with internal coolant and offer high-precision coolant delivery. In parting and grooving, the workpiece is usually very close to the cutting edge, meaning there is not a lot of space. High-precision coolant delivers coolant directly to your cutting edge, protecting your tool. The coolant also helps push the chips up and break them, improving your chip control.
Maximize Tool Life
Choosing tools suitable for your machining application is important to maximizing your tool life. Today, tools come equipped with innovative and advanced geometries and grades that offer different benefits. Additionally, tools will come with different coolant delivery methods from internal to high-precision coolant. Picking the right combination of geometry, grade, and coolant delivery could make or break your parting and grooving.
Boost Cost Efficiency and Productivity
The right tool can boost your cost efficiency per part by decreasing cycle time and improve your productivity by giving you a secure process. Certain grades can help your tool tolerate heat, meaning you&#;ll save time when machining many parts. A tougher grade could help your tool stand up to interruptions, which would give you process security.
Are You Picking the Right Tools for Your Parting and Grooving Operations?
Is your shop achieving successful parting and grooving? In the end, the bottom line of parting and grooving is your tool choice. With so many tool choices in the tool crib, it can be hard to decide what tool to use. This is where Triumph can help &#; we&#;ll help you find the perfect solution to your machining needs. Let us supply you with the perfect tool for your parting and grooving operation today! Contact us to learn more.
References
Sandvik Coromant CoroCut 2
The document provides tips for successful parting and grooving operations. It recommends using tools with over- and under-coolant to control chips, wear, and temperature. Quick change systems and smart clamping solutions can minimize tool change time and avoid errors. When parting off, reduce feed rate near the part falling off, maintain center height tolerance, and turn off coolant at the rpm limit. For face grooving, start on the largest diameter and work inward in multiple cuts, use side turning when possible, and use the highest coolant pressure to improve chip control and evacuation.
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